Guînes climate — normals and trends
Guînes (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.4 °C and it receives 739 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (17.1 °C on average) and the coldest is January (4.1 °C). Rainfall peaks in November.
Guînes averages 30 frost days, 1 hot days (≥ 30 °C) and 139 rainy days per year.
Guînes has warmed by +1.9 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 45 to 15 per year over the period.
The hottest day of the period reached 38.5 °C (on 25 July 2019) and the coldest -17.4 °C (on 6 January 1979).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
GuînesHauts-de-France
- coords
- 50.87°, 1.87°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.4°C
Average daily high
13.2°C
Average daily low
7.7°C
Annual rainfall
739mm
Sunshine / day
8.4h
Mean relative humidity
81%
Average peak wind
23.7km/h
Seasonal range
13.0°C
Frost days (< 0 °C)
30 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
139 d/yr
Annual snowfall
11.7 cm
Average feels-like high
10.5 °C
Average feels-like low
4.4 °C
Average peak gust
44.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.48 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
38.5 °C
25 July 2019
Coldest day
-17.4 °C
6 January 1979
Wettest day
53 mm
10 August 1945
Windiest day
78.0 km/h
25 January 1990
Strongest gust
141.5 km/h
25 January 1990
Hottest feels-like
39.6 °C
25 July 2019
Coldest feels-like
-22.1 °C
6 January 1979
Snowiest day
14.9 cm
21 November 1977
Sunniest day
16.0 h
18 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 6.1 °C | 0.0 °C | 127 mm | +62 mm |
| Feb | 7.2 °C | +0.5 °C | 47 mm | -7 mm |
| Mar | 12.0 °C | +2.7 °C | 10 mm | -42 mm |
| Apr | 16.1 °C | +4.0 °C | 25 mm | -27 mm |
| May | 16.9 °C | +1.4 °C | 33 mm | -25 mm |
| Jun | 21.1 °C | +2.8 °C | 63 mm | +11 mm |
| Jul | 21.9 °C | +1.6 °C | 68 mm | +12 mm |
| Aug | 22.1 °C | +1.6 °C | 35 mm | -25 mm |
| Sep | 18.5 °C | +0.2 °C | 76 mm | +12 mm |
| Oct | 15.0 °C | +0.5 °C | 88 mm | +15 mm |
| Nov | 11.3 °C | +1.4 °C | 79 mm | +0 mm |
| Dec | 8.9 °C | +1.7 °C | 52 mm | -21 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Guînes?
Guînes has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.4 °C and it receives 739 mm of precipitation per year.
What is the hottest day ever recorded in Guînes?
The hottest day measured in Guînes between 1940 and 2025 was 25 July 2019, reaching 38.5 °C.
What is the coldest day in Guînes?
The coldest day measured in Guînes between 1940 and 2025 was 6 January 1979, at -17.4 °C.
Does it snow in Guînes?
Yes. Guînes gets on average 11.7 cm of snow per year and has around 30 frost days.
Has the climate of Guînes warmed?
Yes: Guînes warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Guînes?
The wettest day measured in Guînes between 1940 and 2025 was 10 August 1945, with 53 mm of rain in 24 hours.
What was the windiest day in Guînes?
The windiest day measured in Guînes between 1940 and 2025 was 25 January 1990, with winds reaching 78.0 km/h.
What is the warmest month in Guînes?
The warmest month in Guînes is August (17.1 °C on average); the coldest is January (4.1 °C).
How much does it rain in Guînes?
Guînes receives on average 739 mm of precipitation per year, spread over about 139 rainy days.
Is it sunny in Guînes?
Guînes gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.
What is the biggest single-day snowfall in Guînes?
The heaviest 24-hour snowfall measured in Guînes between 1940 and 2025 was 21 November 1977, with 14.9 cm.
Are there tropical nights in Guînes?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Guînes.
What was the most extreme apparent temperature in Guînes?
In Guînes, between 1940 and 2025, the highest apparent temperature reached 39.6 °C on 25 July 2019, and the lowest was -22.1 °C on 6 January 1979.
Compare Guînes with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Guînes